These are old-fashioned, screwtop, thick-glass, pint bottles. Years ago, most were full of Whitbreads beer. All have the screw-in stoppers and most have the essential washers to keep them properly sealed.  However, the plastic washers that I bought to replace the worn-out red rubber washers (see picture) seem not to give a perfect seal, so you may have to obtain ones that fit better.  There are 21 bottles, in an old milk crate designed to hold 20.